Tubular packaging material

Abstract

Disclosed is a packaging material suitable for manufacturing synthetic sausage casings, comprised of a cellulose hydrate base layer and a layer of vinylidene chloride containing copolymer on the base layer, as well as several methods for preparing the packaging material.

What is claimed is: 
     
       1. A tube based on regenerated cellulose containing a portion of water and plasticizer and having on its surface a coating composed of a mixture of a first and a second copolymer in a ratio of 1:1 to 4:1, the first copolymer consisting of 90 percent by weight of vinylidene chloride, 1 percent by weight of acrylic acid, and 9 percent by weight of acrylic acid methyl ester, and the second copolymer consisting of 85 percent by weight of vinylidene chloride, 2 percent by weight of acrylic acid, 6 percent by weight of acrylic acid methyl ester, and 7 percent by weight of acrylic acid butyl ester. 
     
     
       2. The tube as defined by claim 1, wherein the mixture is defined by a ratio of 1:1. 
     
     
       3. The tube as defined by claim 1, wherein the mixture is defined by a ratio of 4:1.